Porter County Property Tax Appeal, Indiana

Travis Bunn·Updated July 22, 2026

Porter County is located in Northwest Indiana along the shores of Lake Michigan and is part of the Chicago metropolitan area. With a county seat in Valparaiso and a population of approximately 173,000, the county includes major cities such as Portage (the largest), Valparaiso, and Chesterton. Porter County has a median home value of $261,900 and an effective property tax rate of 0.83%, resulting in a median annual property tax bill of $2,172, significantly higher than Indiana's state median of $1,199. Property tax appeals matter here because homeowners pay approximately 24% above the national median property tax rate, and with higher-than-average home values, even small assessment reductions can yield substantial annual savings.

Notable cities: Valparaiso, Portage, Chesterton, Burns Harbor, Hebron

Median Home

$261,900

Tax Rate

0.83%

Annual Tax

$2,172

Population

173,215

On the typical Porter County home, valued near $261,900 at the county’s effective tax rate of 0.83%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: June 15, 2026 or 45 days from receipt of assessment notice, whichever is later

Indiana law provides two possible deadlines for filing property tax appeals: June 15 of the assessment year, OR 45 days after you receive your Form 11 Notice of Assessment (whichever date is later). For the 2026 assessment year, most Porter County homeowners must file by June 15, 2026. If you receive your assessment notice after May 1, you have 45 days from the date of the notice to file your appeal. Missing this deadline eliminates your right to appeal for that tax year.

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How Porter County Assesses Property

100%of market value

Assessed by: Porter County Assessor's Office

Assessment cycle: annual

Notices typically mailed: mid-May

Indiana assesses property at 100% of its market value, meaning your assessed value should equal the fair market value of your home. For example, if your home's market value is $261,900 (Porter County's median), your assessed value would be $261,900 at the 100% assessment ratio. At Porter County's effective tax rate of 0.83%, this results in approximately $2,172 in annual property taxes before exemptions. Assessment notices are typically mailed by mid-May each year and include both the market value and assessed value of your property.

The Appeal Process

Appeals are heard by the Property Tax Assessment Board of Appeals (PTABOA). The PTABOA hearing is a formal proceeding where you present evidence to support your requested assessment value. An administrative board reviews your evidence, hears testimony from both you and the assessor, and issues a written determination typically within several weeks to months. The PTABOA can adjust your value upward, downward, or leave it unchanged based on the evidence presented.

Step 1: File Form 130 (Taxpayer's Notice to Initiate an Appeal) with the Porter County Assessor by June 15, 2026, or within 45 days of receiving your assessment notice. Include your parcel number, current assessed value, your proposed value, and reasons for the appeal.

Step 2: Attend an informal conference with the Porter County Assessor's office. The assessor will review your appeal and may offer to adjust your assessment or deny the appeal. This informal meeting provides an opportunity to resolve the dispute without a formal hearing.

Step 3: If the informal review does not resolve your appeal, the assessor forwards your case to the Porter County Property Tax Assessment Board of Appeals (PTABOA). The PTABOA will schedule a formal hearing with at least 30 days' notice.

Step 4: Prepare and present evidence at your PTABOA hearing. Bring comparable sales from January 1, 2025 through December 31, 2025, photographs of your property showing condition issues, a USPAP-compliant appraisal dated 1/1/2026 if available, and documentation of any property defects or needed repairs.

Step 5: Receive the PTABOA's written determination (Form 115). If you disagree with the PTABOA decision, you have 45 days to appeal to the Indiana Board of Tax Review (IBTR) by filing Form 131. If the PTABOA fails to hold a hearing within 180 days, you may appeal directly to the IBTR.

Step 6: If the IBTR denies your appeal or you disagree with their determination, you may file an appeal with the Indiana Tax Court as a final level of review.

Step 7: Throughout the process, continue paying your property taxes on time (due May 10 and November 10 annually). If your appeal succeeds after payment, the county will issue a refund for any overpaid amount.

Required form: Form 130 - Taxpayer's Notice to Initiate an Appeal (State Form 53958)

Filing Methods

mail:Porter County Assessor, 155 Indiana Ave., Suite 211, Valparaiso, IN 46383

email:Assessor@portercountyin.gov (include parcel number in subject line)

in-person:Porter County Assessor's Office, 155 Indiana Ave., Suite 211, Valparaiso, IN 46383. Hours: Monday-Friday 8:30 AM - 4:30 PM

online:Online parcel search and appeal information available at https://engage.xsoftinc.com/porter and https://search.portercountyassessor.com/

Evidence to Bring

Comparable sales of similar properties from January 1, 2025 - December 31, 2025USPAP-compliant appraisal dated January 1, 2026 prepared by a licensed appraiserPhotographs showing property condition, defects, or deferred maintenanceRepair estimates or contractor quotes for significant property issuesProperty record card showing any errors in property characteristics (square footage, bathrooms, etc.)Recent sale of the subject property or written offers to purchase

Porter County Assessor Contact

Porter County Assessor's Office

Website: https://engage.xsoftinc.com/porter

Online Portal: https://search.portercountyassessor.com/

Hours: Monday - Friday, 8:30 AM - 4:30 PM

Tax Exemptions in Porter County

Standard Homestead Deduction

$45,000 or 60% of assessed value (whichever is less), plus Supplemental Homestead Deduction of 35% of remaining value

Available to owner-occupied primary residences on up to one acre of land. Reduces the assessed value subject to property taxes.

Eligibility: Must be your primary residence and you must occupy the property on the assessment date (January 1). Only one homestead deduction allowed per taxpayer.Deadline: January 5 with the Porter County Auditor's Office

Over-65 Circuit Breaker Deduction

Limits annual tax increases to 2% maximum

Caps annual property tax increases at 2% per year for qualifying senior homeowners.

Eligibility: Must be age 65 or older and meet strict income requirements. Applied to homestead properties.Deadline: January 5 annually with the Porter County Auditor's Office

Disabled Veteran Property Tax Exemption

100% disabled veterans (including Individual Unemployability status): Full exemption from all property taxes. Partially disabled wartime veterans: $350 annual credit. Partially disabled veterans age 62+: $250 annual credit (credits can be combined for maximum $600 benefit)

New 2026 exemption provides significant tax relief for veterans with service-connected disabilities.

Eligibility: Must have served at least 90 days, received honorable discharge, and have VA disability rating. No home value cap under new 2026 law. Must be primary residence.Deadline: January 5 with the Porter County Auditor's Office. Certificate of Eligibility required from Indiana Department of Veterans Affairs.

Automatic Homeowner Credit (New 2026)

10% of property tax bill, up to $300 maximum

Automatic 10% credit on property tax bills for all qualifying homesteads starting tax year 2026.

Eligibility: All homestead-eligible properties automatically receive this credit. No application needed.Deadline: No application required - applied automatically by Porter County Auditor

Mortgage Deduction

Varies based on property and mortgage details

Provides additional assessed value reduction for homeowners with a mortgage on their primary residence.

Eligibility: Must have an active mortgage on homestead property. New application required after refinancing.Deadline: January 5 with the Porter County Auditor's Office

Porter County Appeal Statistics

Avg Reduction

$650

Porter County Appeal Packet — $49

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Porter County for 2026?

The deadline to file a property tax appeal in Porter County is June 15, 2026, or 45 days after you receive your Form 11 Notice of Assessment, whichever date is later. For most homeowners whose assessment notices are mailed before May 1, the deadline is June 15, 2026. If you receive your notice after April 30, you have 45 days from the date you receive it to file your appeal. Missing this deadline means you lose your right to appeal your 2026 assessment entirely, so it's critical to file Form 130 as soon as you believe your assessment is too high.

How do I file a property tax appeal in Porter County?

To file a property tax appeal in Porter County, you must complete and submit Form 130 (Taxpayer's Notice to Initiate an Appeal) to the Porter County Assessor's Office. You can file by mail to 155 Indiana Ave., Suite 211, Valparaiso, IN 46383, by email to Assessor@portercountyin.gov, or in person during office hours (Monday-Friday 8:30 AM - 4:30 PM). Your Form 130 must include your parcel number, the current assessed value you're appealing, your proposed assessed value, and a detailed explanation of why you believe the assessment is incorrect. After filing, you'll typically be offered an informal conference with the assessor before proceeding to a formal PTABOA hearing if necessary.

What is the homestead exemption worth in Porter County?

The homestead exemption in Porter County consists of two parts: the Standard Homestead Deduction provides either $45,000 or 60% of your assessed value (whichever is less), and the Supplemental Homestead Deduction provides an additional 35% reduction of the remaining assessed value after the standard deduction is applied. For a home with Porter County's median assessed value of $261,900, the combined homestead deductions can reduce your taxable assessed value by approximately $120,000 to $150,000, saving you roughly $1,000 to $1,250 annually in property taxes. Starting in 2026, homesteads also receive an automatic 10% credit (up to $300 maximum) applied directly to the tax bill. You must apply for the homestead deduction by January 5 with the Porter County Auditor's Office.

What evidence do I need for a successful Porter County property tax appeal?

To win your Porter County property tax appeal, you need market-based evidence showing your home's assessed value exceeds its actual market value as of January 1, 2026. The strongest evidence includes: (1) comparable sales of similar properties in your area from January 1, 2025 through December 31, 2025, (2) a USPAP-compliant appraisal dated January 1, 2026 prepared by a licensed Indiana appraiser, (3) photographs documenting property condition issues, deferred maintenance, or functional obsolescence, and (4) contractor estimates for major repairs needed. You should also review your property record card for errors in square footage, number of bathrooms, or other characteristics. The Porter County Assessor's office specifically requires arms-length comparable sales from the appropriate calendar year preceding the assessment date.

What happens at a PTABOA hearing in Porter County?

At a Porter County PTABOA (Property Tax Assessment Board of Appeals) hearing, you'll present your evidence and testimony to an administrative board that reviews property tax appeals. The PTABOA must provide at least 30 days' notice before your hearing, which is typically held in Valparaiso. During the hearing, both you and the Porter County Assessor present evidence, including comparable sales, appraisals, and property information. The board asks questions and reviews all submitted evidence before issuing a written determination on Form 115, usually within several weeks to months. The PTABOA can increase, decrease, or maintain your assessed value based on the evidence presented. If you disagree with the PTABOA's decision, you have 45 days to appeal to the Indiana Board of Tax Review.

How much can I save by appealing my property taxes in Porter County?

Successful property tax appeals in Porter County save homeowners an average of $650 per year according to industry data, though savings vary significantly based on your property's overassessment. With Porter County's effective tax rate of 0.83%, every $10,000 reduction in assessed value saves you approximately $83 annually. For example, if you successfully reduce your assessed value from $280,000 to $250,000 (a $30,000 reduction), you'd save approximately $249 per year, which compounds to $2,490 over ten years. Given that Porter County's median tax bill of $2,172 is substantially higher than the state median, even modest assessment reductions can yield significant long-term savings, making the appeal process worthwhile for homeowners who have evidence their property is overvalued.

Can the Porter County Assessor increase my property value if I file an appeal?

Yes, Indiana law allows the PTABOA to adjust your assessed value in either direction during an appeal, they can lower it, leave it unchanged, or increase it based on the evidence presented. However, in practice, assessment increases resulting from homeowner appeals are extremely rare in Porter County and across Indiana, occurring in less than 0.1% of appeals. The assessor must present evidence to justify any increase, and the burden of proof may shift depending on circumstances. To minimize this risk, only file an appeal when you have strong comparable sales evidence clearly supporting a reduction. If your evidence demonstrates your assessment exceeds market value, the risk of an increase is negligible, and the potential savings make filing worthwhile.

What is the difference between appealing my assessment and appealing my tax bill in Porter County?

In Porter County and throughout Indiana, you can only appeal your property's assessed value, not your total tax bill amount. Your property tax bill is calculated by multiplying your assessed value by the local tax rate, which is set by various taxing units (schools, county, townships, etc.) and cannot be appealed individually. When you file Form 130, you're challenging whether the assessor correctly determined your property's market value as of January 1, 2026. If you believe your assessment is too high compared to your home's actual market value, you appeal the assessment. However, if your assessment is accurate but you simply think your tax bill is too high due to tax rates, the appeal process cannot help, you'd need to address that through local government budget processes or legislative action.

Official Resources

Porter County Assessor Website →

Official Porter County Assessor website with property search, assessment information, and appeal resources.

Porter County Property Search & Appeals Portal →

Search your property records, view assessment history, and access parcel information for Porter County properties.

Indiana Department of Local Government Finance - Property Tax Appeals →

State-level resource explaining Indiana's property tax appeal process, forms, and deadlines.

Indiana Board of Tax Review (IBTR) →

State agency that handles second-level property tax appeals after PTABOA decisions, including the POPLAR online filing system.

Porter County Auditor - Property Tax Deductions & Exemptions →

Information about homestead deductions, veteran exemptions, and other property tax relief programs available in Porter County.

For state-wide appeal information including Indiana's assessment ratio and deadlines, see our Indiana Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Indiana Counties

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← All Indiana property tax appeal info

Sources: https://engage.xsoftinc.com/porter/resources | https://www.portercountyin.gov/Directory/Home/DepartmentListing?DID=16 | https://taxbycounty.com/indiana/porter-county | https://www.in.gov/dlgf/appeals-property-tax/ | https://www.portercountyin.gov/817/Homestead-Deduction | https://www.in.gov/ibtr/

Last verified: 2026-07-22